Planetary centrifugal separator.



W. MAUSS. PLANETARY OENTBIFUGAL SEPARATOR. APPLIOATION FILED APB..17,1914.

1,126,547, Patented Jan. 26, 1915.

Q s'TAtrns PATENT OFFICE.

WII HELM MAUSS, OF JOHANNESBURG, TRANSVAAL, SOUTH AFRICA.

PLANETARY CENTRIFUGAL SEPARATOR,

' To all whom it may concern:

and liquid material; said separators being of the planetary "type inwhich the separating drums are rotated orbitally at high speed tosubject the material to centrifugal force for effecting the separation,and are rotated relatively slowly about their own axes to withdraw thesettled solid material from the separation zone topermit its discharge.

The invention is illustrated in the accompanying drawings in whichFigure I is an elevation partly sectioned on the plane CD Fig. II, andFig. II is a sectional plan through AB Fig. I.

The separating drums 1 are carried in a main frame comprising the upperand lower plates 2, 3, the seatings 4 for the drums and the inclosingcylindrical casing 5. Said frame is rotated about the main axis 6 bymeans of shaft 7. Each 'drum is mounted in the seating 4 to rotate aboutits own axis 8 said rotation being. effected relatively slowly by anysuitable mechanism indicated by 9, 10. The axes 8 are vertical and eachdrum is provided above and below its cylindrical portion 11 withinclined flanges 12, 13 forming an annular trough the part 14 of whichremote from the axis 6, constitutes the separating zone. The pulp ormaterial to be treated is supplied to an annular hopper 15 and thencethrough pipes 16 to the drums. As the apparatus is revolved about axis6, said material collects in said zone 14, where its constituentsseparate under the influence of the centrifugal force.

The separated liquid constituent is suitably passed away for instanceover the upper flange 12, and through the aperture 17 in the casing 5.The solid matter settles on the internal surface of the drum, and iswithdrawn from the separating zone by the rotation of the drum about itsaxis 8 as indicated by the arrow.

In apparatus of the kind it is often difli- Specification of LettersPatent. 3 I Application filed April 17, 1914. Serial No; 882,529.

right to the inner side of the drum before detachment;

the drum near the main axis 6, which is dis- -emerging from the channel20.

' the drum with adhesion rings 23 disposed Patented Jan. 26, 11a.

cult to transport the cake of settled solid materialfrom the settlementzone because as the transporting surface of the drum turns more and moreparallel with the direction of the centrifugal force, the deposit tendsto break and roll up and to slide back into the separation zone. Theobject of the present invention is to overcome this difiiculty andenable the deposit to be carried With this object a retaining shield 18is fixed to the plates 2, 3 by the pillars 19 and is positioned withinthei drum to form between itself and the wall of the drum, a closedchannel 20 through which the settled solid material is conveyed. Said.channel is made of such size as to be sub stantially filled by the cakeso that the latter is prevented from breaking up and rolling back. Inorder to prevent an undue thickness of deposit from being forced intothe channel and setting up excessive friction, the forward edge 21 ofthe shield is provided with a cutting edge which cuts 0d surplusthickness of the deposit presented to it.

The shield 18 is carried round substantially to the point of removal ofthe deposit, which is preferably the part of the drum nearest the mainaxis 6, and therefore farthest away from the separating zone 14. It isdesirable to remove the cake positively at a definite point by means ofa plow 22 fixed to the plates 2, 3. The centrifugal force tends to throwthe material off the part of advantageous because it induces frictionagainst the shield 18 and also tends to cause the material to break offirregularly upon Accordingly such throwing off effect is minimized bybringing the drums as closely as possible to the main axis 6. In theconstruction shown the two drums almost meet at the axis 6.

The transportation of the deposit may be assisted by providing theinterior surface of perpendicularly to the axis 8. Said rings are thinand of considerable width transversely to said axis so as to present alarge area to make frictional contact with the deposit. They may beperforated as shown to allow liquid to pass away from the spaces betweenthem. The plow 22 is suitably 1 grooved to pass over said rings.

The plowed ofl' solid matter is projected etary type,

out of the open bottom of the drum and through the aperture 24 in thelower plate 3. An inverted hute 25 may be fitted to shut off the fallingmaterial from the separation.

zone 14. In case of stoppageo'f the appara'- tus. material remaining inthe'drum can flow out through the spaces 26 and 27 and'through theaperture 28 in the casing 5,

What I claim and desire to secure by Letters Patent is 1. In acentrifugal separator of the planetary type, the combination with eachdrum of a shield forming with the part of the wall of the drum whichmoves toward the main axis, a channel through which is conveyed thematerial deposited on the wall of the drum.

2. In a centrifugal separator of the planetary. type a shield forming achannel with the part of the wall of the drum which moves toward themain axle, said shield ex tending from the separation zone remote fromthe main axis to the part of the drum close to the main axis.

3. In a centrifugal separator of the planthe combination with each drumof a shield forming a channel with the part of the wall of the drumwhich moves toward the main axis, and a plow disposed near to on itsinner surface,

the termination of said channel for detach- 30 ing deposit from the wallof the drum.

. 4. In a centrifugal separator of the planetary type the com ination ofa plurality of drums almost touching the main axis each drum containinga shield forming a channel with the part of the wall of the drum whichmovestoward the main axis.

5. In a centrifugal separator of the planetary type the combination of aplurality of drums almost touching the main axis each drum containin ashield forming a channel with the part 0 the wall of the drum whichmoves toward the main axis, and means within the drum and adjacent tothe main axis for detaching deposit from the wall of the drum.

6. In a centrifugal separator of the planetary type, the combinationwith each drum of adhesion rings disposed circumferentially and a shieldforming with the wall of the drum a passage for conveying depositedmaterial.

In testimony whereof I afiix my signature in presence of two witnesses.

WILHELM MAUss. Witnesses:

WESLEY E. JOHN,

RITA Yum.

